Extech 407730 Digital Sound Level Meter

40-130dB Meter featuring large LCD display with analog bargraph

The 407730 sound level meter measures from 40 to 130dB with an accuracy of 2dB. The digital display offers a 0.1dB resolution and features a fast responding analogue bar graph. User can choose A or C weighting. Max Hold captures highest reading. Includes microphone wind screen and four AAA batteries.

407730 Datasheet

407730 User Manual

SKU: Extech 407730 Categories: Extech, Sound Meters Tags: EXTECH, Sound Level

Description
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The Extech 407730 measures and displays sound pressure levels in dB from 40 to 130dB.

User selectable features include Frequency Weighting (‘A’ and ‘C’), Response Time (Fast and Slow), Max Hold, and Max/Min recording.

Extech 407730 Digital Sound Level Meter Features:

±2dB accuracy with 0.1dB resolution
A+C weighting
AC analogue output
Record Max/Min values over time
Utilizes 0.5″(12.7mm) electret condenser microphone

Extech 407730 Specifications:

Display	LCD with bargraph
Microphone	10mm (0.5”) Electret condensor
Measurement Bandwidth	300Hz to 8KHz
Measurement Range	40 to 130dB (A wtg), 45 to 130dB (C wtg)
Frequency weighting	‘A’ and ‘C’ (selectable)
Accuracy / Resolution	± 2dB @1kHz (under reference conditions) / 0.1dB
Response time	Fast: 125 milliseconds / Slow: 1 second
Calibration source	1KHz sine wave @ 94 or 114dB
AC output	0.707Vrms full scale
Power	4 AAA Batteries
Battery life	30 hours (typical); low battery indicator alerts user
Automatic power off	After approx. 20 minutes
Operating temperature	0 to 50°C
Operating humidity	10 to 90% RH
Storage temperature	-20 to 60°C
Dimensions/weight	230 x 57 x 44mm / 172g